Pump-valve.



No. 647,383. Paieme ,-Apr. lo, |900; F. B. EccLEsToN, w. F. MILLER & J.A. NELsoN.

P U M P V A LV E (Application mea Apr. 1, 1h99.)

UNITEDY STATES NPATiliwr OFFICE.

FRANK B. ECLESTON, VILLIAM F. `MILLER, AND JOI-IN A. NELSON, OF NEBRASKACITY, NEBRASKA.

PUMP-VALVE.

SPECIFICATION formingpart of Letters Patent No. 647,383, dated April 1o,1900.

' Application nea April 1,1899. serial 110.711,404. (No man.)

To a/ZZ whom it may concern):

Be it known that we, FRANK B. ECCLESTON, WILLIAM F. MILLER, and JOHN A.NELSON, of Nebraska City, inthe county of Qtoe and State of Nebraska,have invented a new and Improved Pump-Valve, of which the following is afull, clear, and exact description.

The objects of the invention are to provide a new and improvedpump-valve which is simple and durable in construction, very eective inoperation, and arranged to protect the valve-ring from serious injuryfrom the corrosive actionof the liquid pumped, to insure a proper andeven seating of the valve, and to allow of conveniently placing it inposition on the machine on which it is to be used.

The invention consists of novel features and parts and combinations ofthe same, as will be fully described hereinafter, and then pointed outin the claim.

A practical embodiment of our invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters ofV reference indicate corresponding parts in all theviews.

Figure l is a sectional side elevation of the improvement. Fig. 2 is asectional plan view of the same on the line 2 2 in Fig. l. Fig. 3 is aninverted sectional plan view of the same on the line 3 3 in Fig. l, andFig. A is a sectional side elevation of the combination wrench andSpanner used for placing the parts of the valve in position.

The valve-seat A for the valve is screwed or otherwisesecured in thepart B of the machine on which the valve is to be used, and in thecenter of said seat A screws the threaded lower end C of a valve-stem C,on which the valve proper is guided to move the valvering D upon andfrom the seat A. The valvering D is preferably made of hard rubber andis tted into the annularly-recessed lower end E of a housing E, and saidvalve-ring is Vformed at its inside with a beveled annular flange D',engaged by a correspondinglyshaped flange F on a plate or disk F,screwing into the housing E to securely hold the valve-ring in positionin the housing.

On the top of the plate F presses the lower end of a spring Gr, coiledaround the valve- Vstem C and resting with its upper end against aflange C? on the' head G3 of the valve-stem, said flange C2 beingpolygonal in form and fitting into a correspondingly-shaped cap E2 ofthe housing E. The upper end of the spring G is coiled around the headC3, and the lower end of the spring is coiled around an annular offsetF2, formed on the top of the plate F, so that the spring is held inproper position both at the top and bottom to insure a uniform openingand closing of the spring upon opening and closing the valve. The plateF is formed with a central opening for the passage of the valve-stem C,which latter thus forms a guide for the plate, and its head C3 forms aguide for the housing E and prevents the latter from turning on the headof the stem owing to the polygonal shape of the fiange C2 `and the capE2. -The plate F is further provided with apertures F3 for receiving thelugs H of a combination Spanner and wrench .(see Fig. 4 and dotted linesin Figs. l and 3) to permit of conveniently screwing the plate inposition on the housing E to securely hold the valve-ring D in place.The tool mentioned is provided with an aperture Hzfor passing over thevalve-stem C when screwing up or unscrewing the plate. (See dotted linesin Fig. 3.) The tool is also provided with a polygonal head H3 (shown indotted lines in Fig. l) to it the cap E2 and turn the housing and alsothe stem C to screw the lower threaded end C thereof into or out of thecenter of the valve-seat A.

From the foregoing it` is evident that the plate F for holding thevalve-ring in position in the housing can be made of a dierent materialfrom the ring and according to the liquid to the pumped-#that is, theplate is preferably selected of a material not liable to injury from thecorrosive action of the luid pumped by the machine on which the valve isapplied. Thus such liquid is not liable to injure the ring D, as only anextremely'small portion of the same is exposed to the liquid, as will bereadily' understood by reference to Fig. l. Furthermore, the housing E,with the valve-ring D and plate F, is prevented from turning on the stemowing to the iange C2, forming the polygonal guide for the polygonal IOOl cap E2, and Consequently the face of the recessed lower' end, thehousing inolosing the stem and spring and the lower portion of the 15housing, inclosing and being secured to the plate, and a valveming heldbetween beveled lange of the plate and the annularly-reoessed lower endof the housing.

FRANK B. ECCLESTON. VILLIAM F. MILLER. JOHN A. NELSON.

Witnesses:

JOHN A. RooNEY, LOUIS GILMAN.

